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SAE-AISI M48 Steel vs. ASTM B596 Au-Cu

SAE-AISI M48 steel belongs to the iron alloys classification, while ASTM B596 Au-Cu belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is SAE-AISI M48 steel and the bottom bar is ASTM B596 Au-Cu.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
100
Poisson's Ratio 0.29
0.41
Shear Modulus, GPa 78
36
Tensile Strength: Ultimate (UTS), MPa 890 to 2390
450 to 620

Thermal Properties

Latent Heat of Fusion, J/g 260
77
Melting Completion (Liquidus), °C 1670
1060
Melting Onset (Solidus), °C 1620
930
Specific Heat Capacity, J/kg-K 420
150
Thermal Expansion, µm/m-K 12
14

Otherwise Unclassified Properties

Density, g/cm3 8.7
18

Common Calculations

Stiffness to Weight: Axial, points 13
3.1
Stiffness to Weight: Bending, points 22
8.5
Strength to Weight: Axial, points 28 to 76
6.8 to 9.4
Strength to Weight: Bending, points 23 to 45
7.1 to 8.8
Thermal Shock Resistance, points 26 to 71
22 to 30

Alloy Composition

Carbon (C), % 1.4 to 1.5
0
Chromium (Cr), % 3.5 to 4.0
0
Cobalt (Co), % 8.0 to 10
0
Copper (Cu), % 0 to 0.25
9.0 to 11
Gold (Au), % 0
89 to 91
Iron (Fe), % 63.8 to 69.8
0
Manganese (Mn), % 0.15 to 0.4
0
Molybdenum (Mo), % 4.8 to 5.5
0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.15 to 0.4
0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 9.5 to 10.5
0
Vanadium (V), % 2.8 to 3.3
0
Residuals, % 0
0 to 0.4

Comparable Variants